Description

N,N'-Bis- (1-Naphthalenyl)-N,N'-Bis-Phenyl-(1,1'-Biphenyl)-4,4'-Diamine is a high-performance organic compound, also known as NPB, valued for its exceptional hole-transport properties and thermal stability. This material is a critical component in the manufacture of advanced organic light-emitting diodes (OLEDs) and other optoelectronic devices. It is primarily sought by manufacturers and R&D teams in the electronics, display technology, and advanced materials sectors for creating efficient, long-lasting devices.

Application

• Hole Transport Layer (HTL) in OLED Displays: A key functional material in the construction of OLED panels for smartphones, televisions, and monitors.
• Organic Photovoltaic (OPV) Cells: Used in the development of solar cells to facilitate efficient charge transport and improve energy conversion efficiency.
• Organic Field-Effect Transistors (OFETs): Serves as an active semiconducting layer in the fabrication of flexible and printed electronics.
• Electroluminescent Devices: A fundamental material in research and production of various light-emitting devices beyond standard displays.
• Chemical Synthesis Intermediate: Used in advanced organic synthesis to create more complex molecular structures for specialized applications.
• Research & Development: Essential for academic and industrial R&D focused on next-generation organic electronic materials and device physics.

Basic Information

Product Name	N,N'-Bis- (1-Naphthalenyl)-N,N'-Bis-Phenyl-(1,1'-Biphenyl)-4,4'-Diamine
CAS No.	123847-85-8
Molecular Formula	C44H32N2
Molecular Weight	588.74 g/mol
Synonyms	NPB; N,N'-Di(1-naphthyl)-N,N'-diphenylbenzidine; N,N'-Bis(1-naphthyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine; 4,4'-Bis[N-(1-naphthyl)-N-phenylamino]biphenyl; α-NPD; N,N'-Diphenyl-N,N'-di(1-naphthyl)benzidine; 1,1'-Biphenyl, 4,4'-bis[N-(1-naphthalenyl)-N-phenylamino]-; N,N'-Bis(1-naphthalenyl)-N,N'-bis(phenyl)benzidine
EINECS	Contact for details

Quality Control

Our N,N'-Bis- (1-Naphthalenyl)-N,N'-Bis-Phenyl-(1,1'-Biphenyl)-4,4'-Diamine is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity, critical for optoelectronic performance. Each lot is analyzed using advanced techniques including HPLC, NMR, and elemental analysis. Certificates of Analysis (COA) detailing purity, identity, and key impurity profiles are provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to greenish-yellow crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 99.5% (Area %)
Melting Point	285 - 295 °C
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Moisture Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.